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China, the world's largest tobacco consumer, is aiming to ban indoor smoking in public areas by the end of the year.

About one in three cigarettes smoked in the world is in China, according to the World Health Organization. And more than half of Chinese men smoke, according to the Global Adult Tobacco Survey in 2010.

The China's National Health and Family Commission is now working on a tobacco control law with clear punishments, according to Xinhua.

The country's health authorities estimate over a million deaths from tobacco-related diseases every year. The WHO warns that if tobacco use is not decreased in China, these deaths will increase to 3 million by 2050.